Improvement in printing-telegraphs



2 Sheets-Sheet I. v

E. A. CALAHAN. Printing Telggraph.

Pa'iented Feb. 1, 1870.

$71 ass 6 s.-

2 Sheets-Sheet 2.

E. A. CALAHAN. Printing Telegraph.

Patented Feb. 1 18 70.

. .lllli T HHHH L O x Irv 215201 UNITED STATES I PATENT OFFICE.

EDWARD A. GALAHAN,-OF. BROOKLYN, NEW YORK.

IMPROVEMENT lN PRlNTlNG-TELEGliAPHS.

Specification forming part of Letters Patent No. 99,4.0l,-dated February I, 1870.

To all whom it may concern Be it known that I, EDWARD A. CALAHAN, of Brooklyn, in the county of Kings and State of New York, have inventedand made anew and useful Improvement in Printing -,Telegraphs; and I do hereby declare the followingto be a full, clear, and exact description of the said invention, reference being had to the'an nexed drawing, making part of this specification, wherein Figure l is an exterior elevation of myapparatns. Fig. 2 is a view of the interior parts, the front plate being removed. Fig; 3-is a plan of the instrument, and Fig. 4 is a de tached plan of the regulating-fly and clockwork.

- Similar marks of reference denote the sameparts. 1 s

In my improvedprinting-telegraph:the type wheel is revolved by a weight, as permitted by the action of an escapement control'ledbyelectrical pulsations and a magneti'Themove' ment of the type-wheel causes a circuit to remain closed, or nearly so,-upon a second mag. net, and when the type-wheel is stopped the; said circuit is broken, and a:fly-clock-movement and connected mechanism makesrand; breaks-gradually a third circuit that operates a magnet that gives the impression.

My instrument is especially adapted to bank ing and commercial purposes and private tel; egraphing, beca.use'=the printing is self-open.=

ating during'the pause between the transmis sion of one letter and the next.

I' employ a dial circuit breaker and closer: as a convenient and reliable mode of giving" pulsations-to move the type-wheel-to the desired poin t. Several instruments can be placed in the same circuit, and operated simultaneou-sly. The derangement of one instrument .has no efl'ect on the others.

-One ofthe special features of my invention relates to the moving of a spring or weight by the action of an armature and lever, and the employment ofa train -of wheels and a fly, to'regulate the gradual movement of the parts in the opposite direction while operated uponby the spring or weight. A pawl is employed, acting upon a disk with a roughened or finely-serrated edge,t'o allow the movement of the armature and lever withoutturningthe fly back. A disk and pawl of the same character=are employed to move the feed-rollers that draw along the paper. These are-tobe distinguished from aratchet-wheeliu which a definite movement has to begiven, or else=therel is fitted so that itmay be wound up, if run down, as usual. c c c is a train :of gearing to movethe escapement-w-heel dwhen thepal- ,lets care operated by& the. -armature e and magnet f. 26 is :.the binding-screwfor the line-wire that leads to this magnet f andthe return-circuit is through-the frame a and binding-screw 3, It is to be uuderstood that .the vpulsations ofelectricity-areto besent through this magnet f by a finger-key, revolving pointter,-or-any other device .to-allow'the typewhee1 9 (that isonthe shaft d!) to be. turned around until theproper .letteror character is l .in position forv being-impressed uponthe strip of paper 4, that is led through. the guide 5 .below the guide 6, and overthe. impressionblock 7 tothe; feeding-rollers kkl, hereafter described g is :theinking-roller-torthe typewheel 9, and 8 is a spring to the lever c of the pallets 6, adj usterltotheshaft andthumbhead 9. The shaft 01 has a ratchet-wheel, Z, that actsto press back a,.tooth,=:10, .and move the leverl awayt'romsaidratchetawheelwhile thesaidratchet-wheelis revolving;- but when 'it and the type-wheel stop; the tooth :10.= falls into the opening between-the:ratchet-teeth. The lever Z has anarm, 11, goingthroughthe plate a freely, and a spring, 12, tends to draw :the lever 1 toward the wheel Z. "This movement, however, wouldbe sudden when the wheel l stopped were it not for the fly m, acted upon by the train of gearing m,;so as to have the necessary speedcommunicated to said fly through the agency of the lever l and spring 12, saidlever lbeing provided with a; link, 13, to a swinging plate, 14:, on which is a springpawl,-15, taking the roughened edge of the disk 16. Hence, as the lever l is pressed back by the tooth and ratchet-wheel l, the pawl takes a fresh position against the edge of the disk 16, and when the ratchet Z permits thereof the movement of the lever l is gradual at any speed to which the parts may be adjusted. This movement of the lever l I employ to close and break automatically the circuit to the second magnet n. This is effected by the spring 13 taking the screw 19, and closing the circuit from the binding screw through the magnet n, insulated arm 21, screw 19, spring 18, lever Z, frame a, and bindingscrew 3.

While the current passes through'n the armature n is attracted, and .the breaking of the circuit through 12 allows the armature-lever n to move gradually, as next described,

to closet-he circuitthat efi'ectsthe printing, and this, it will be seen,.occurs when the typewheel stops. a

The lever 42 is connected'byla link, 22, with a'swinging plate,p, that'moves upon the shaft 23 of the roughened edged disk 1", and carries a spring-pawl, s, which takes against the edge of the diskoq; and 24 is a spring, adjustable by the shaft and turning-head 50, to move the plate 12 more or less rapidly when the-armature n is released.

The movement of the armature a, lever 02, and parts connected therewith, is rendered gradual by the. train-of wheels 4, that multiply speed to the :fly s, the resistance of which upon the atmosphere regulatesthe .speed of movement. 7 v

t is a small frame, that is insulated from the main frame a, as is also the connection t that passes through said frame ate the magnet u that effects the printin Said magnet to is in a circuit connected with the binding-screw 2, the other pole of. the battery being connected to the frame a and binding-screw 3.

The arrangement of the batteries and lineconnections, being of any desired character, need not be detailed.

On tl e axis of the armature n is a lever, n having two studs, 28 29, projecting. through openingswin the framea, and upon the frame t is a. swinging circuit-breakeno, having three arms, the arm 30 coming. near an adjustingscrew, 31, through the stud 29, the other arm, 32, acting as a counterpoise, and the arm 33 having a double inclined end acting with the spring 34, and its inclined end, to insure the movement of a fully in either direction.

An arm, 35, extends from thestud 28, and acts, by a screw, upon an insulating-block upon the arm 33.

When the armature n is attached, the parts stand-inthe, position illustrated in the separate view Fig. 5, the screw 31 being out of contact with the arm 30; hence, the circuit through-u is broken at this point. As soon as the armature n is released, and begins to move, the screw 31 takes the arm 30, closing thecircuit through the magnet u, and giving the impression through the armature a lever a and pressure-pad 7, that is carried by the said armature, the paper 4, pad 7, and guide 6, all being moved with the armature w and lever 10 The contact of 31 with 30, and the pressure from the spring 24, is sufficient to move the circuit-closer '0, notwithstanding the inclined endof the arm 33, and the spring 34, and the incline ofthe arm 33, passes beyond the in cline of the spring 34; hence, the arm 30 is suddenly drawn away from 31 by the action of the spring 34-breaking the circuit of u, and the parts assume a normal position, as seen in Fig. 1, until the typewheel is moved again to set the next letter or character,

It will now be understood that this apparatusis easily adjusted to the speed with which the operator manipulates; if he is rapid, the spring- 24 ,will require to be under more tension by turning the, shaft and button so that the fly s will move more rapidly, and bring the impression-magnet into operation I almost instantly; if the operator is slow, or hesitates in his movements, the spring24 must be under a light tension, to prevent a false letter being imprinted.

, I here remark that the type-wheel for general purposes should contain letters and figlures; it may also containfractions, and there being a blank space on the type-wheel, the;

space between the words will be produced at that point.

I provide a means The device for that is attached at the end to the armaturelever a and said lever is provided with a connection to the swinging plate 42, upon which is a spring-pawl, 43, taking the roughened surface of the disk :1? on the shaft of the 'roller k,and 44 is a holding-pawl to the disk or; -hence, as the impression is given, the pawl 43 is drawn back over the surface of the disk 40, and, as the armature and lever are returned to position by the spring 41, the pawl 43 revolves the disk 00 and feed-roller k, and movesv the paper.

The cam 51 becomes a stop to the movement of the lever a and thereby the extent of mo-; tion given to the feed-rollers can be regulated,

The feed-roller 7c is formed with an edge of fine teeth, and should be double, to act each sidev of the impression on the paper. The roller should also be double,'and kept to-, ward k by spring 46, so as to gripe the'paper.

I am aware that electro-magnets have been employed to act upon armatures, stops, and breaks, thatcontrol the movement of clockwork actuated by springs or weights, but

for setting the typewheel, should it miss a movement; this consists 1 in an arm, w, that is upon a rod, 38, that is I pushed in and takes a pin, 39, on the wheel 01, and prevents the wheel 01 and type-wheel turning any further, even though the armature 0 may be vibrated in setting other instruments in the same line to the determined starting point.

moving the rollers 70 k in feeding the paper consists in a spring, 41,

these devices require winding up to furnish the actuating-power. In my device the magnet furnishes the actuating-power.

'W hat I claim, and desire to secure by Letters Patent, is

1. A train of gearing and a fly applied, substantially as specified, to render gradual a motion derived from the movement of the armature of an electro-magnet, substantially as specified.

2. The combination of the following devices: An electro-magnet and armature, a fly and train of gearing, a disk and pawl, and an actuating spring or weight, the parts being constructed and arranged so that the actuating spring or weight is moved by the armature, and gives motion to the regulating-fly, substantially as set fortlu 3. The spring 24, in combination with the train of gearing, fly, armature, and adjustingdevice 50, whereby the speed of movement is regulated by the adjustment of the spring 24,

' substantially as set forth.

by the stopping of the type-wheel, substantially as set forth.

5. The lever 1, arm 11, and yielding circuitcloser 18, in combination with the armature e, to close and break the circuit to the magnet n, as set forth.

6. The ratchet-wheel I, (log 10, and lever l, in combination with the pawl .9, disk 1, fly s, and circuit-breaker;v, substantially as set forth.

7. The lever v, with the arms 30 and 33, in combination with the armature n, lever n arm 35, and inclines 34, and circuit-closer 31, substantially as set forth.

8. A swinging arm, 30, yielding incline 34, in combination with a circuit-closer having a limited movement, substantially as specified, so that the circuit is broken at the end of the movement by the action of the incline.

9. The means herein specified for giving motion to the feed-wheel of a printing-telegraph, the same consisting in a pawl and plate, swung by the armature-lever upon the axis of the feed-wheel, in combination with a disk having a roughened periphery, substantially as set forth.

In witness whereof I have hereunto set my signature, this 8th day ofeptember, A. D. 1869.

EDWD. A. GALAHAN.

Witnesses:

OHAs. E. SMITH, GEo. D. WALKER. 

